Click here for practice. You will want to make sure that Prediction for a Single y… and ANOVA are unchecked. We haven’t discussed those this year.
Data for AMDM project 3/5/2019
AMDM Survey 3/4/2019
Go to: mrmealor.wordpress.com
Should I use pairedt test or two sample ttest for difference of means?
To help decide between one sample and two sample t procedures, students should ask themselves:

How many samples do I have?

0ne (pairedt test)

Two. (twosample ttest for difference of means. Probably.) Watch out for two samples that pair individuals.


Can any piece of data in the first group be compared to any piece of data in the second?

Yes. (twosample ttest for difference of means)

No, they must stay in pairs. (pairedt test)


Do they reference pairing the data?

Yes. (paired ttest)

No. (twosample ttest for difference of means)

[Source: statsmedic.com]
Confidence Intervals
The Signal and the Noise…
…by Nate Silver
Nate Silver is perhaps best known for his website fivethirtyeight.com in which he uses probabalistic methods to forecast and comment about sports, politics, societal trends, etc. He began his work around 2003 by analyzing baseball statistics and developing tools for evaluating players. He perhaps became best known for correctly predicting outcomes in the 2008 presidential election. His book, The Signal and the Noise, summarizes his history and approach. The title comes from the current issue of separating the useful data (the signal) from the overwhelming deluge of data (the noise) we as a culture generate continuously. AP Statistics students and teachers alike would benefit from reading this book as it explains, illustrates, and extends course material.